Treating fabrics



oct. 21, 1930. H MALY 1,178,863 f A TREATING FABRICS Filed Nov. "7, 1928Patented Oct. 21 1930 NITED STATES masas Y 'rnnA'riNG FABRICSApplication led November '7, 1928, Serial No.

My invention relates to a process for preheating, squeezing, steaming,and inish drying fabrics in one continuous operation, and to anapparatus intended for carrying out this process. i

In the process of drying fabric in the usual tentering. and Adryingmachines, the fabric retains the more or less smooth condition in whichit reaches 'the machines. In

1o all cases the web, in the condition as it comes from the washingapparatus and after having been dried by centrifugalization or suction,is fed to the drying machine with all the creases that arose previously.The consequence thereof is thatA the dried web subsequently must besubjected to a very intense dry-hot squeezing operation and intense drysteaming by very hotsteam, to impart to 'it a creaseless smoothappearance.

By these drastic drylhot operations, however, hitherto considered asnecessary, the web, or the fibrous material it consists of, is seriouslyinjured.

Now my present invention has for its 0bject to so treat the wet web inone uninterrupted operation previous to the usual drying operation, bysqueezing it in a hot cylinder press and simultaneously steaming itunder this pressure, that the creases which arose during the extractionof the water and the drying operation are thoroughly re.

moved.

I realize this problem by using the moisture still existing in thealready' squeezed web and amounting about to 40 percent, to revive thefibrous material the web consists of, and to protect the material frombeing burnt due to drying. The subsequent finish drying operationemployed in a very mild 40 degree then definitely establishes the smoothcondition of the web.

While in the hitherto usual operation the individual steps followed oneanother in the order drying, squeezing, steaming, these operations withmy new process are .per-

formed in following order: squeezing,

' steamin drying, the' entire treatment beper ormed in one continuousoperation.

My new method -may also be employed prevlously to teasingy the webs, inorder to tby way of example in the accompanying 317,802, and in Germany'Nvemter 17, 1927.

feed to theteaseler a web in entirely smooth v condition. IThis resultsin anvabsolutely uniform teasing effect, because an absolutely uniformsmooth 'surface is offered to the teasels, which consequently have thepossibility to likewise act uniformly.

The lapparatus intended to .carry out my new process partly comprisesknown and partly new elements. A new element con- A sists in a presscomposed of a pressing cylinder and a trough, or concave, and in a feedguide for the web, this guide serving to pre-heat the web before itarrives between the pressing cylinder and the trough. A further newelement consists in guiding the .web further Varound said cylinder forthe subsequent finish drying. The squeezing and finish drying operationsmay, however, be performed by means of special heating means, such asheated cylinders.

In order to allow of my invention to be moreV easily understood, apreferred embodiment of the apparatus serving to carry it out and twomodifications thereof are illustrated drawing.

While not yet squeezed, the web a to be treated is guided by rollers bthrough a suction device c of known design, the water extracted from theweb being collected in -the tank d. Thereupon the web thus predried isguided over a transverse stretcher e formed by suitable hackle orgripper chains, and over a guiding cylinder f, which in the embodimentillustrated in Figure 1, at the same time forms a temple. The locationof this cylinder is so determined that the predried web comesintopreliminary contactwith a Vheated squeezing cylinder h at the pointdenoted by g, on which cylinder'the 90 web -is then pre-heated on the.section g-z'. Thereupon the web passes from i to -c between thesqueezing cylinder k and the trough m, which latter Vmay be likewiseheated. On the way from z'. to k the web 95 is subjected both tovaporization of its moisture and to a squeezing pressure. The steamgenerated hereby cannot escape` since the web constitutes its ownpackingmeans. Now, as it is wel1known,any libre is in the 100 most tractablecondition as long as it is in a hot and Wt condition, and this propertyin many eases is troublesome, e. g., in coloring, heating, and Washingfabrics, as it provokes undesirable felting; in the present process,however, this property has a favorable effect -in realizing the objectaimed at.

From the point k, where the web leaves the gap existing .between the`cylinder L and trough m, up to the point In, where vit gradually passesover to the guide roller0,the web is completely dried by said cylinderle., and leaves the apparatus. When the web should be beamed up afterhaving been treated according to my new process in the describedcylinder-trough press h, m, it may immediwherein a. suction deviceprecedes said tenter and temple.

Apparatus for heating fabrics comprising a heated cylinder clement and aconcave element between which a moist. fabric web is adapted to bepassed to be squeezed and steamed, a pre-heating;f roll for the wehinlmediately in advance of said elements, and a heated drying rollimn'iediately behind said elements.

6. Structure according to claim 5 wherein the pre-heating roll serves astemple.

In testimony whereof I aiiix my signature.

' HERMANN MALY.

ately be supplied from guide rollero to a beam 1', as illustrated inFigure 2. If required, the roller o may be heated inside, .so

that-'a further finish drying takes placeV thereon.

In Figure 3 is shown a different manner of guiding the web beforeentering'and after leaving the cylinder-trough press h, m. In thismodification two stationary or rotary heating bodies rv, y are-arrangedbeside the trough m instead of the temple cylinder f and guidingcylinder 0 of Figure 1., around which bodies the web a is guided. Inthis case too the cylinder a; may serve as temple.

In treating webs according to my described process, climatic conditionsare of no influence on the fabric, more particularly the material may besubjected to the described treatment in a more wet condition than causedby the moist climate of many tropical countries.

What Igelaim and desire to secure by Letters Patent, is

1. Apparatus for treating fabrics comprising a heated cylinder elementand a concave element between which a moist fabric web is adapted to bepassed to be squeezed and steamed,- means for pre-heatinf1r the webimmediately prior to its coniinement between said elements, a tenter and`a temple preceding said preheating` means in the order named, and meansfor drying the web immediately subsequent to its confinement betweensaid elements.'

2. Apparatus for treating fabrics comprislng a heated cylinder elementand a concave element between which a moist fabric web is adapted to .bepassed to be squeezed and .str-ameri, means for pre-heatingrr the webcomprising a temple for guiding the web in contact with the cylinderelement in advance Y of the concave element, and means for drying theweb comprising a member for guiding the web in contact with the cylinderelement to the rear of the concave element.

3. Structure in accordance with claim 2 wherein the lastnamed guidingmember is in the formA of a heated roll.

4C. Structure in accordance with cla-im 1

